Analysis, Design and Implementation of Double-Clamped-Voltage Coupled-Inductor Switched-Capacitor DC–DC Converter.

The work deals with a new-fashioned booster configuration, named double-clamped-voltage coupled-inductor (DCI) switched-capacitor (SC) DC–DC converter, as well as with some related to system modeling, analysis and design, in fulfillment of the purposes for closed-loop regulation and ultra-large-gain conversion. In the power part, there are two subsets: DCI booster (a coupled inductor, two clamping capacitors, one switch) and three-stage SC tripler (three pumping capacitors, three switches), working together to provide the step-up gain: 3 (n + 1) [ (2 − D) ∕ (1 − D) ] theoretically (D: ratio cycle, n: turn ratio). If n = 3 , D = 0. 6 , the output will be boosted to 42 times the voltage of supply (e.g., from 12 V to 500 V, as applied in sputters). In the control part, there are three subsets: low-pass filter, nonoverlapping and pulse-width-modulation (PWM) circuits, designed via Cadence pre/post-layout procedures and mainly implemented on a full-custom chip (ID: D35-106D-E0001, TSMC0.35   μ m, 3.3 V, 2.763 mW, 50 kHz max.), not only for operating the timing topologies but for reinforcing the output regulation/robustness. Besides, the details of theoretical analysis/control design are considered. Finally, the simulation/experiment cases are illustrated for confirming the theory's validity and for verifying the scheme's practicality via testing on the implementation of the DCISC prototype. [ABSTRACT FROM AUTHOR]